potentially polymorphic call with model instance inside model function

<?php

namespace App\Models;

I cannot reproduce the warning.
I got no warning.

PHP Code:

use CodeIgniter\Model;

class Sale extends Model
{
} 


PHP Code:

<?php

namespace App\Models;

use CodeIgniter\Model;

class Test extends Model
{
    public function get_value(): int
    {
        $sale = model('Sale');

        return $sale->get_quote_number_for_year();
    }
} 


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I don't know why you got the warning.

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